In London, the news came through just in time to rewrite much of that day’s edition. Valentine Low looks back

When the news broke it was 7pm in London, two and a quarter hours before the
deadline for the first edition. The telex from The Times’ Washington
correspondent, Louis Heren — one of three he sent that night — was dramatic,
and to the point. “It is reported that Kennedy has been shot on his trip
round Texas, indications are, fatally: the Governor of Texas has also been
wounded,” Heren wrote.

At short notice, the staff were faced with having to rewrite much of the paper
— and this in the days when transatlantic phone calls had to be booked in
advance.